119Dialog 4223 Professional/Dialog 4225 Vision
Accessories
Option unit (optional)
The option unit DBY 420 01/1 is an optional accessory to be
installed under your telephone set. The unit is used to connect
either an extra bell outside your room, or a busy signal lamp
outside your door.
To check or set the option unit for extra bell or for busy
signal
Dialog 4223 Professional:
PhoneSet Press (see display).
If
PhoneSet is not shown, press more... until appearing.
Select Press (see display).
Down or Up Press to frame Option Unit Settings (see display).
Select Press (see display).
The Line 2 key lamp indicates the setting of the option unit:
Off=Extra bell, On=Busy signal lamp. Flashing=Combined extra bell
& busy lamp.
Line 2
Ô Press to change to busy signal,
or
Line 2
ÕÔ press to change to extra bell & busy signal,
or
Line 2
ÖÔ press to change to extra bell.
Exit Press to save the setting and exit (see display).
Note: If you do not press
Exit, the phone automatically
returns to idle about 30 seconds after the last key press.
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